Tag: chemical reactions

A Coordinates complex has the formula $PtCl.2KCl$. Electrical conductance measurements indicate the pressure of three ion in one formulaa unit. Treatment with $AgNO _{3}$ produces no precipiate of $AgCl$. What is the coordinates no of $Pt$ this complex?

An acidic solution of Cu+ salt containing 0.4 g of Cu+ is electrolysed until all the Cu is deposited. The electrolysis is continued for 7 more minutes with volume of the solution kept at 100 ml and the current at 1.2 amp. Calculate volume of the gases evolved at NTP during entire electrolysis( atomic weight of Cu= 63.6)

An electrolytic cell was set up. Distilled water is placed in the cell and battery is switched on. The bulb is also connected through a battery. The bulb will:

Which of the following is a good conductor of electricity?

Given below are the half cell reactions

${ Mn }^{ 2+ }+{ 2e }^{ - }\longrightarrow { Mn }  E=-1.81V$

$2\left( { Mn }^{ 3+ }+{ e }^{ - }\longrightarrow { Mn }^{ 2+ } \right) E=+1.51V$ will be

Which technique should be used to determine if a solution contains a molecular or ionic solute?

The first step in the extraction of Cu from copper pyrites is?

Conductivity ($\kappa $) of $0.01M$ $NaCl$ solution is $0.000145S$ ${cm}^{-1}$. What happens to the conductivity if extra $100mL$ of ${H} _{2}O$ be added to the above solution?

Which of the following is/are always true electroplating ?